Window sash operating device



Oct. 3, 1944. g1, GRAHAM 2,359,518

- WINDOW SA'SH OPERATING DEVICE Filed Aug. 4, 1943 [III/ll INVENTOR BYaajkwwra ATTOR N EYS Patented Oct. 3, 1944 UNlTED STATES PATENT OFFICEWINDOW SASH OPERATING DEVICE Joe Graham, Louisville, Miss.

Application August 4, 1943, Serial No. 497,369

3 Claims.

This invention relates to window sash operating devices and its generalobject is to provide a device that is primarily designed for raising andlowering sliding window sashes, in an easy and expeditious manner, inthat such is accomplished merely by turning a hand crank, and the sashis held in closed position or any adjusted open position againstmovement other than by the crank, which of course is arranged on theinterior side of the window, thus eliminating the usual latches, looksor the like.

A further object is to provide a window sash,

operating device that is adjustable for application to windows ofvarious widths.

Another object is to provide a device of the character set forth, thatis simple in construction, inexpensive to manufacture, and extremelyefficient in operation, use and service.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawing andspecifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to theaccompanying drawing wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a view looking toward the interior side of a sliding sashwindow, equipped with my device and with parts broken away.

Figure 2 is a sectional view taken approximately on line 22 of Figure 1,looking in the direction of the-arrows.

Figure 3 is a sectional view taken approximately on line 3-3 of Figure1, looking in the direction of the arrows.

Figure 4 is a fragmentary view of a sectional adjustable shaft whichmakes it possible to install my device on windows of various widths.

Referring to the drawing in detail, it will be noted that I haveillustrated one of my devices installed for operating the lower sash ofa window, but a second device may be installed for operating the uppersash B. The frame of the window is indicated by the letter C and theinner wall of a room or the like by D.

The device includes a pair of substantially identical casings indicatedrespectively by the reference numerals l and 2, the casings beingdisposed upon diametrically opposite sides of the frame substantiallymidway the height thereof, as clearly shown in Figure 1. Each casingincludes a disk like plate 3 providing the rear wall therefor and theplate is formed with apertured ears 4 extending outwardly from itsperiphery. The remaining portion of the casing is of cup formation toprovide an outer wall 5, a rounded wall portion 6 and a flat sidewall 1. The rounded wall portion at the open end thereof is formed withoutwardly directed apertured ears 8 engaged with the ears 4, andfastening means such as screws 9 extend through the ears 4 and 8, for

not only fastening the cup portion of the casing to the plate or rearwall 3, but the fastening means secure the casings in place between thewall D and an intermediate portion of the window frame, as best shown inFigure 2, with the side walls 1 facing each other, as well as the siderails of the lower sash.

Each rear plate has fixed thereto a stub shaft [0 extendingsubstantially centrally therefrom, for disposal within the casing, andthe stub shaft H] has a head ll formed on its outer end. Rotatablymounted on the stub shaft is a relatively large spur gear I2. The gearsl2 extend through slots in the side walls 1 of the casings and mesh withracks l3 fixed in grooves along the length of the side rails, as bestshown in Figure 2, so that upon rotation of the gears l2 in onedirection, the sash will be raised and in an opposite direction, thesash will be lowered. Fixed to each gear l2 for disposal between thesame and the head II of the stub shaft I0 is a bevel gear M, for apurpose which will be later apparent.

Bridging the casings is a drive shaft which includes a pair of alignedsections l5 and IS, the section l5 extending into the casing I, whilethe section l6 extends into the casing 2. It might be mentioned herethat the sectional drive shaft makes it possible to install the deviceon windows of different widths, in that the length of the shaft can bevaried. For that purpose, the sections are threaded for a portion oftheir length from the confronting ends thereof, and one threaded portionfrom its end is slotted as at IT, the slot having flat walls, while aflat stem I8 is formed on the other section to fit within the slot, to.prevent rotation of the sections relative to each other, and a sleeveI9 is threaded on the threaded portions to secure the sections together,as clearly shown in Figure 2.

The section 16 is rotatably mounted in and extends through the head ofthe stub shaft within the casing 2, and is held accordingly by a stopcollar 20. A bevel gear 2| is fixed to the section l6 and meshes withthe bevel gear l4 within the casing 2. The section [5 is rotatablymounted in and extends through the head of the stub shaft within thecasing I and the section l likewise has a bevel gear 22 fixed theretoand meshing with the bevel gear I4 within the casing I. The section l5extends throughout the diameter of the casing I and is mounted in abearing 23 in the rounded wall portion 6 thereof, and fixed to thesection [5 is a worm gear 24.

Mounted within the casing l and extending through the outer wall 5thereof, as well as through the wall D, is a stub shaft 25 having itsinner end supported by and rotatably mounted in a bracket 26 secured tothe rounded wall portion 6, as shown in Figure 3, and secured to theinner portion of the stub shaft is a worm 21 that meshes with the gear24. The outer portion of the stub shaft is reduced and fixed thereto isa hand crank 28. A bearing collar 29 which may be formed on the outerface of the outer Wall 5 of the casing I is provided for the stub shaft25 and the collar is mounted in the wall D, as shown in Figure 3.

From the above description and disclosure in the drawing, it will beobvious that when the hand crank is turned in one direction, the sash israised and whenturned in an opposite direction, the sash is lowered. Itwill be further obvious that the sash cannot be operated except by thecrank handle, due to the locking association of the worm and its gear,therefore my device holds the sash in closed .position or in anyadjusted open position, thus eliminating latching means and the like nowin general use for fastening the sash in any of the positions mentioned.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall within the scope of the appended claims.

What I claim is:

1. An operating device for a window sash, comprising a pair of casingssecured within the window frame upon opposite sides thereof, each casingincluding a rear Wall and a cup like portion secured to the rear wall,said cup like portion having a slot in the side thereof, racks securedto the side rails of the sash, a relatively large gear in each casingand mounted for rotation, a bevel gear fixed to the large gear, thelarge gears extending through the slots and meshing with the racks, ashaft bridging the casings, bevel gears fixed to the shaft and meshingwith the first bevel gears, a worm gear in one of said casings and fixedto the shaft, a, stub shaft rotatably mounted in and extending throughthe last mentioned casing, a worm fixed to the inner portion of the stubshaft and meshing with the worm gear, and a hand crank secured to theouter end portion of the stub shaft.

2. An operating device for a window sash, comprising a pair of casingssecured Within the window frame upon diametrically opposite sidesthereof, each casing including a disk like rear wall and a cup likeportion detachably secured to the rear wall, said cup like portionhaving a slot in one side thereof and the slots facing the side rails ofthe sash, said side rails being grooved along the length thereof, rackssecured within the grooves, headed stub shafts fixed to the rearwalls'of the casings, a relatively large spur gear rotatably mounted oneach stub shaft and extending through the slots and meshing with theracks, a bevel gear secured to each large gear concentrically thereof, adrive shaft bridging the casings and rotatably mounted in the heads ofthe stub shafts, bevel gears fixed to the drive shaft and meshing withthe first mentioned bevel gears, a worm gear fixed to the drive shaftand disposed in one of said casings, a stub shaft rotatably mounted inand extending through the last mentioned casing, a Worm fixed to theinner portion of the last mentioned stub shaft and meshing with theworm,and a hand crank secured to the outer end portion of the last mentionedstub shaft.

3. An operating device for a Window sash, comprising a pair of casingssecured within the window frame upon opposite sides thereof, rackssecured to the side rails of the sash, gears mount ed for rotation inthe casings and meshing with the racks, gears secured to the firstgears, a shaft bridging the casings, gears secured to the shaft andmeshing with the second gears, means for rotating the shaft for raisingand lowering the sash through the medium of the gears and the racks,said shaft including a pair of aligned sections to vary the lengththereof for the device to fit windows of various Widths, said sectionsbeing threaded for a portion of their length from the inner endsthereof, one of said sections being slotted longitudinally for a,.portion of its length from its inner end, a stem formed on the innerend of the other section and fittingly mounted in the slot, said slotand stem being shaped for rotation of the sections with each other, anda sleeve threaded on the threaded portions of the sections for securingthe sections together.

JOE GRAHAM.

